Controlled long-range interactions between Rydberg atoms and ions
Controlled long-range interactions between Rydberg atoms and ions
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DOI：
10.1103/physreva.94.013420
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发表时间：
2016-07-22
影响因子：
2.9
通讯作者：
Negretti, A.
中科院分区：
文献类型：
--
作者：
Secker, T.;Gerritsma, R.;Negretti, A.
我们从理论上研究了囚禁离子与耦合到里德伯态的原子的相互作用。里德伯能级的强极化率使原子和离子之间的相互作用强度比基态原子增加了许多数量级，并且可以在微米以上介导。我们计算出，这种相互作用可以用来产生原子和离子的运动或内部状态之间的纠缠。此外，离子可以被用作总线，用于调解原子自旋之间的自旋-自旋相互作用，类似于离子阱量子模拟中广泛使用的技术。所提出的方案具有吸引人的功能，因为它将捕获离子量子系统的好处映射到原子系统上，而不会明显阻碍其内在的可扩展性。不需要离子或原子的基态冷却，并且该设置允许完全的动态控制。此外，该方案在很大程度上不受离子微动的影响。我们的研究结果对于开发混合量子信息平台和实现固态物理的量子模拟具有重要意义。
We theoretically investigate trapped ions interacting with atoms that are coupled to Rydberg states. The strong polarizabilities of the Rydberg levels increase the interaction strength between atoms and ions by many orders of magnitude, as compared to the case of ground-state atoms, and may be mediated over micrometers. We calculate that such interactions can be used to generate entanglement between an atom and the motion or internal state of an ion. Furthermore, the ion could be used as a bus for mediating spin-spin interactions between atomic spins in analogy to much employed techniques in ion-trap quantum simulation. The proposed scheme comes with attractive features as it maps the benefits of the trapped-ion quantum system onto the atomic one without obviously impeding its intrinsic scalability. No ground-state cooling of the ion or atom is required and the setup allows for full dynamical control. Moreover, the scheme is to a large extent immune to the micromotion of the ion. Our findings are of interest for developing hybrid quantum information platforms and for implementing quantum simulations of solid-state physics.